7-21
Adjustments
Manual Adjustments
AM Modulator (8648A Only)
Description
This is the AM Accuracy adjustment for the 8648A. This adjustment performs the two
adjustments to the output board that require the use of the voltmeter. It sets up the
multiplexer on the output board to measure dc voltages while the potentiometers are being
adjusted.
Required Test Equipment
• Measuring Receiver
• Function Generator
• Audio Analyzer
•DVM
• J31 Test Point Extender (refer to the “Test Point Extender” section at the front of this
chapter)
Procedure
Figure 7-20. AM Modulator Test Setup
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